<template>
  <div class="list"
       ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-box">
            <div class="button-info">{{this.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-box"
               v-for="hot of hot"
               :key="hot.id"
               @click="handleCityClick(hot.name)">
            <div class="button-info">{{hot.name}}</div>
          </div>
        </div>
      </div>
      <div class="area"
           v-for="(city,key) of citys"
           :key="key"
           :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom"
               v-for="cit of city"
               :key="cit.id"
               @click="handleCityClick(cit.name)">{{cit.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CityList',
  props: {
    hot: Array,
    citys: Object,
    letter: String
  },
  computed: {
    ...mapState(['city'])
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  }
}
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl'
.border-topbottom
  &:before
    border-color: #ccc
  &:after
    border-color: #ccc
.border-bottom
  &:before
    border-color: #ccc
.list
  position: absolute
  top: 1.58rem
  left: 0
  right: 0
  bottom: 0
  overflow: hidden
  .title
    line-height: 0.54rem
    font-size: 0.26rem
    background: #eee
    padding-left: 0.23rem
    color: #666
  .button-list
    overflow: hidden
    padding: 0.1rem 0.6rem 0.1rem 0.1rem
    .button-box
      float: left
      width: 33.33%
      .button-info
        padding: 0.1rem
        margin: 0.1rem 0.1rem
        text-align: center
        border: 0.02rem solid #ccc
        border-radius: 0.1rem
  .item-list
    .item
      line-height: 0.76rem
      padding-left: 0.23rem
</style>
